Hillary Clinton tops all her potential Republican rivals in a 2016 presidential race, even Ohio Gov. John Kasich, according to a new Quinnipiac University poll.

Kasich trails the former Secretary of State, 47-42 percent. That's the best showing of anyone in the matchups. Ohio is usually a pivotal, must-win state in any presidential election.

Clinton, who sought the Democratic presidential nomination in 2008, has not revealed her plans.

Here's how she fares in trial heats:

--48 - 39 percent over former Florida Gov. Jeb Bush

--47 – 40 percent over U.S. Sen. Marco Rubio of Florida

--49 – 41 percent over U.S. Sen. Rand Paul of Kentucky

--46 – 38 percent over N.J. Gov. Chris Christie

--48 – 41 percent over U.S. Rep. Paul Ryan of Wisconsin

--51 – 37 percent over U.S. Sen. Ted Cruz of Texas

--49 – 41 percent over former Arkansas Gov. Mike Huckabee

Peter Brown, poll assistant director, noted "Most of the GOP candidates are bunched together, trailing by high single digits in trial heats. Kasich's standing might seem logical given his home field advantage, but in February Kasich trailed Ms. Clinton by a dozen points and was down in the pack.